Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang
chieu sach » chinh sach, chiet tach, chieu xanh
nhieu tang » hieu lang, nhiet nang
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
trang dap » trang doan, trang va, trang ha
dap nhung » vap nhung, va nhung, dap ung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((chieu sang) OR (chieu sach))) or (nhieu tang)) - hanh trang dap nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu sang) OR (chieu sach))) OR (nhieu tang)) - hanh trang dap nhung cong tac toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((chieu sang) OR (chieu sach))) or (nhieu tang)) - hanh trang dap nhung cong tac toan cau*".